_Health and the Central Nervous System_.--Nature has so constituted and ordered the human economy that its health depends to a great extent on conditions in the central nervous system. We discuss elsewhere the return of vitalism in physiology--that is, the reassertion of a principle of life behind the chemical and physical forces of the human organism regulating it, supplying energy, occasionally enabling it to transcend the ordinary laws of osmosis, or the diffusion of gases. The main seat of this principle of life is in the central nervous system and especially in the cerebral cortex. The importance of this portion of the human anatomy can scarcely be exaggerated. In his inaugural address to the Royal Medical Society, [Footnote 23] delivered at Edinburgh in 1896, Prof. T. S. Clouston, the distinguished English psychiatrist, has a passage on this subject that deserves to be recalled: [Footnote 23: _British Medical Journal_, January 18, 1896.] I would desire this evening to lay down and to enforce a principle that is, I think, not sufficiently, and often not at all, considered in practical medicine and surgery. It is founded on a physiological basis, and it is of the highest practical importance. The principle is that the brain cortex, and especially the mental cortex, has such a position in the economy that it has to be reckoned with more or less as a factor for good or evil in all diseases of every organ, in all operations and in all injuries. Physiologically, the cortex is the great regulator of all functions, the ever active controller of every organ and the ultimate court of appeal in every organic disturbance. _Psychotherapy in Its Relation to Patient and Physician_.--In spite of the present-day fad for psychotherapy, I have no illusions with regard to its popularity among patients, unless practiced with due regard to individuals and with proper tact. Psychotherapy has been most effective in the past when it was cloaked beneath the personality of the physician; when it was felt that there was in him a power to do good that must help the patient. This personal influence has to be maintained if the patient's mind is to be influenced favorably. Very few people are willing to think, and still less to welcome the thought, that they themselves are either bringing about a continuance of their symptoms or are hindering their own recovery. They are quick to conclude that this would be a confession that their ills are imaginary. "Imaginary" has no place in medicine. There are physical ills and mental ills. Mental ills are just as real as physical ills. There are no fancied ills. A person may be ailing because he persuades himself that he is ailing, but in that case his mind is so affecting his body that he is actually ailing physically, though the etiology of the trouble is mental.